I know in any given place like this, there's at least a dozen people who struggle with social anxiety, disinclination or impairment. I do myself, and to a degree that I'm not really functional, so I'm curious to hear what methods and exercises have helped you or someone you know improve.
One thing I can share for those of you with problems speaking around strangers is Skype calls with online friends. A while ago I started practicing with someone I'm more or less comfortable around but have never met in-person, and it's helped a lot so far. Within about 4 or 5 sessions, I went from being unable to utter a single word to being able to talk almost completely freely. I still can't talk to strangers or even my boyfriend but I can safely say it's a step in the right direction.